Blower for dynamo-electric machines



C. W. STARKER.

BLOWER FOR DYNAMO-ELECTRIC MACHINES. APPLICATION FILED F554;, 1918.

1,433,752. Patented Oct. 31, 1922.

WITNESSES: INVENTOR .fl V Mar/es. W Jfarie/r Patented Oct. 31, 1922.

UNITED OFFICE.

CHARLES W. STARKER, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC & MANUFACTURING COMPANY A CORPORATION OF PENN- SYLVANIA.

BLOWER FOR DYNAMIC-ELECTRIC MACHINES.

Application filed February 8, 1918. Serial No. 216,106.

To all whom it ma com-em:

Be it known that CHARLES W. STARKER, a citizen of the German Empire, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have in vented a new and useful Improvement in Blowers for Dynamo-Electric Machines, of which the following is a specification.

My invention relates to air-agitating devices that are adapted to be attached to rotatable members, and it has for'its object to provide a device of the character designated of such nature that the amount of air caused to circulate may easily be varied to conform to existing conditions Heretofore, it has been customary to construct fan members of such nature, that each different size of machine required fan members built for its own individual use and usually were mounted on a ring member which had to be of the same diameter as the rotating element to which it was attached. By my invention. I provide fan members, each of which is individually mounted on the rotating element and is of such design that a single member may be employed on any one of a number of machines of a considerable range of sizes.

Referring to the drawings. Fig. 1 is an isometric view of the rotor of a dynamoelectric machine provided with a fan memher constructed in accordance with my invention; and Fig. 2 is a detail view of a slight modification of the fan member shown in Fig. 1.

Referring more particularly to the drawinsrs. I have shown a shaft 1 on which a rotatable element 2 is mounted. Fan members 3 are mounted on the rotatable element 2, in diametrically o posite positions. by means of bolts 4. The fan member 3, as shown in Fig. 2. consists of two substantiall U-shaped members 5 and 6. each of which consists of main body portions or shrouds .7 c arcuate form. and leg portions 8 at its ends which are integral. with the main body portions 7 and extend at right angles thereto. The leg portions 8 of the U-shaped members 5 are provided with flanges 9 having slots 10 therein through which the bolts 4 extend for attaching the fan members to the rotatable element 2. The U-shaped members 5 and 6 are attached to each other by any suitable method. I

The slots 10 in the flanges 9 aid in rendering the fan members adjustable to various sizes of machines.

Fig.2 shows a slight modification of my mventron in which a single L-shaped member 11 is attached to the shroud 7. replacing the U-shape member 6 of Fig. 1.

It is obvious that any number of fan members may be attached to a single rotating element in order to produce the desired amount of ventilation, the number being limited only by the space on the rotating element necessary for mounting "the .fan members. It will also be readily apparent that a tan blade member constructed in accordance with my invention is not limited to any one size of machine but may be em- Dloyed on any machine the radius of which is within reasonable range of the radius of the main body portion of the fan member Which is arcuate in form.

While I have shown one form of my invention. it will be obvious to those skilled "r the art that it is susceptible of various minor changes and modifications without departing from the spirit thereof. and I desire. therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or are specifically set forth in the appended claims.

I claim as my invention:

1. In combination, with a rotor memher. an air-propelling device comprising a unitary pressed member disposed in spaced and parallel relation to the face of said rotor and having the extremities the eof bent to form a plurality of supporting feet and member of substantially U-shape adapted to be secured to said pressed member and disposed between the same and the face of said rotor member.

2. In combination with a rotor member, an air-propelling device comprising a singlemember having central portion disposed parallel to the face of the said rotor member but spaced therefrom, said member having the end portions thereof bent parallel to, and into engagement with said face, and portions intermediate said central and said end portions bent perpendicular to said face.

3. In combination with a rotor member,

such, for example, as by we ding.

an sir-propelling advice comprising a substsntis'illy Ushnped member, the -e-in body of Which is ercnnte in form and is spaced from said rotor memliier and disposed substent nll x' at right angles to the axis thereo'l? and the leg members of which are disposed parallel to said rotor member axis and are attached to said rotor member;

4:. In a; dynemoelectric machine, the combinstion with a rotor member provided with an end plate, of an air-propelling device comprising; a substantially U-sheped memhen the main body of which is erc iste in form and is disposed substantially at right angles to the axis of said rotor member and the legs of: which are disposed. parallel to rotor member axis and are attached to said end plate by threaded fastening;

means.

5. In a dynamo-electric machine, the com" binetion With e, rotor member provided with an end plate of an air-propelling device comprising; a substantially L -s :ped member, the main body of which is ztrcuste in form and is disposed substantially at right angles to the axis of said rotor memher and the legs of which Hhe disposed parallel to said rotor member axis and are attached to said end plate by threaded fastening means and leg member attached to said main body member and disposed intermediate the members of said U-shepe member and parallel thereto.

6. In at dynamo-electric machine, the com bination with a rotor member provided with an end plate, of an ainpropellinp; device comprising two substantially U-shaped members, one Within the other the main body portions of Which are attached to gether and are arcuete in form and are disposed st substsntielly right angles to the axis of the rotor member and having the leg portions of both of said members disposed. substentielly parallel to said rotor member axis and having the legs of the outermost member attached to said end plate. y

In testimony whereof, I have hereunto subscribed by name this 2nd day of Feb. 1918.

CI-IARL'ESW. STARKEE. 

